629H13TDDL1B MKS 629H Heated Baratron 1000 Tor

MKS 629H13TDDL1B | 1000 Torr Heated Baratron Pressure Transducer

Stable pressure measurement requires more than a high-resolution sensing element. Thermal regulation, material selection, and signal integrity also influence long-term performance.

The MKS Instruments 629H13TDDL1B is a heated absolute pressure transducer from the 629H Series (600 Series). It provides a 1000 Torr full-scale measurement range and maintains its sensor temperature at 100°C.

This model incorporates improved temperature-control electronics for enhanced long-term measurement stability. Its capacitance-based Baratron sensing technology supports precise vacuum pressure monitoring.

The instrument provides a 0–10 VDC analog output and a 9-pin D-sub electrical connector. An NW16 ISO-KF connection simplifies integration into compatible vacuum assemblies.

Its Inconel wetted construction supports demanding process environments. The defined thermal coefficients help engineers evaluate measurement behavior under changing ambient conditions.

01. Product Identity and Functional Architecture

Identification	Specification
Manufacturer	MKS Instruments
Complete Model	629H13TDDL1B
Product Family	MKS 629H Series
Platform	600 Series
Product Type	Heated Baratron Absolute Pressure Transducer
Measurement Technology	Capacitance Manometer
Measurement Reference	Absolute Pressure
Full-Scale Range	1000 Torr
Controlled Sensor Temperature	100°C
Temperature Control	Improved temperature-control electronics
Process Connection	NW16 ISO-KF
Electrical Connection	9-pin D-sub with thread locks

02. Configuration Breakdown | Model Suffix Identification

The complete ordering number identifies the product family and selected hardware configuration. The following breakdown separates supplied configuration information from code interpretations that require manufacturer confirmation.

Code Segment	Configuration Identification	Interpretation
629H	Product Family	Heated Baratron absolute pressure transducer family
13	Range Configuration	Associated with the specified 1000 Torr full-scale version
T	Pressure Unit	Torr configuration
D	Connection Configuration	Supplied unit specification confirms NW16 ISO-KF
D	Additional Configuration	Exact ordering-code meaning requires the official MKS code table
L	Electrical Configuration	Supplied unit specification confirms a 9-pin D-sub connector
1B	Factory Configuration	Specific factory configuration; detailed decoding requires manufacturer confirmation

Configuration Verification: The confirmed product specifications take priority over assumptions based on individual suffix characters. In particular, this configuration does not provide external zero adjustment, trip-point outputs, or a heater status LED.

03. Pressure Measurement and Performance Data

The 1000 Torr range supports pressure monitoring across a broad vacuum process window. The heated sensing architecture helps maintain consistent measurement conditions.

Measurement Parameter	Technical Specification
Measurement Type	Absolute
Full-Scale Range	1000 Torr
Accuracy	0.12% of Reading
Accuracy Components	Includes non-linearity, hysteresis, and non-repeatability
Resolution	0.001% F.S.
Equivalent Resolution	0.01 Torr
Sensor Temperature	100°C controlled
Warm-Up Time	2 hours
Zero Temperature Coefficient	0.002% F.S./°C
Span Temperature Coefficient	0.02% of Reading/°C

Performance Interpretation: Accuracy describes measurement deviation under specified conditions. Resolution describes the smallest specified measurement increment. These values represent different performance characteristics.

04. Thermal Control and Long-Term Stability

The 629H architecture maintains the sensing element at a controlled temperature of 100°C. Improved temperature-control electronics support superior long-term stability.

• Controlled Heating: Maintains the sensor at its specified 100°C operating temperature.
• Thermal Stability: Reduces measurement variations associated with sensor temperature changes.
• Zero Stability: Specifies a zero temperature coefficient of 0.002% F.S./°C.
• Span Stability: Specifies a span temperature coefficient of 0.02% of Reading/°C.
• Startup Requirement: Allows two hours for the specified warm-up period.

Thermal Parameter	Value
Ambient Operating Temperature	15 to 40°C
Sensor Temperature	100°C
Warm-Up Time	2 hours
Zero Temperature Coefficient	0.002% F.S./°C
Span Temperature Coefficient	0.02% of Reading/°C

Important: The 100°C value describes the internal controlled sensor temperature. It does not represent the allowable ambient operating temperature.

05. Electrical Interface and Analog Signal Output

The instrument uses an analog voltage interface for integration with compatible process controllers and data acquisition systems.

Electrical Item	Specification
Power Supply	±15 VDC, ±5%
Power Consumption	0.60 A
Analog Output	0 to +10 VDC
Minimum Output Load Impedance	Greater than 10 kΩ
Connector	9-pin D-sub
Connector Retention	Thread-locking hardware
External Zero Adjustment	Not available
Trip Point Outputs	Not available
Heater Status LED	Not available

Signal Integration Recommendations:

• Provide a regulated ±15 VDC power supply.
• Check the current capacity before selecting the power supply.
• Use an analog input compatible with 0–10 VDC signals.
• Maintain an input impedance above 10 kΩ.
• Verify the 9-pin connector pinout before wiring.
• Use appropriate grounding and shielding practices.
• Do not expect external zeroing or relay trip functions.

06. Vacuum Interface and Wetted Construction

The process assembly uses Inconel wetted materials. Its NW16 ISO-KF fitting supports compatible vacuum plumbing arrangements.

Mechanical Parameter	Specification
Process Fitting	NW16 ISO-KF
Wetted Materials	Inconel
Internal Volume	6.3 cc
Overpressure Limit	45 psia (310 kPa) or 120% F.S., whichever is greater
Body Diameter	3.15 in (80.0 mm)
Body Height	3.87 in (98.4 mm)
Stem Length	1.38 in (35.1 mm)
Compliance	CE compliant

Mechanical Integration: Check the NW16-KF interface, sealing hardware, and available mounting clearance. Avoid excessive mechanical loads on the transducer body.

07. Installation and Commissioning Strategy

Installation quality affects vacuum integrity and measurement repeatability. Follow these steps during equipment integration.

1. Model Verification: Confirm the complete 629H13TDDL1B ordering number.
2. Range Verification: Confirm the 1000 Torr full-scale requirement.
3. Mounting Preparation: Check clearance for the 80.0 mm body diameter and 98.4 mm height.
4. Orientation: Follow the manufacturer's mounting and calibration instructions.
5. Port Inspection: Inspect the NW16-KF interface and sealing surfaces.
6. Vacuum Connection: Install compatible KF hardware and suitable seals.
7. Electrical Wiring: Verify the 9-pin connector pinout and power polarity.
8. Power Application: Supply the specified ±15 VDC.
9. Thermal Stabilization: Allow two hours for warm-up.
10. Signal Validation: Compare analog readings against a suitable pressure reference.

08. Maintenance and Diagnostic Considerations

Preventive maintenance should focus on electrical integrity, vacuum connections, and thermal performance.

Observed Condition	Recommended Inspection
Output fluctuation	Inspect power stability, grounding, and analog signal wiring.
Unexpected zero offset	Check reference pressure and calibration conditions.
Slow startup stabilization	Verify the complete two-hour warm-up period.
Inconsistent readings	Inspect vacuum connections and compare an independent reference.
No analog output	Check supply voltage, connector wiring, and input configuration.

Service Recommendation: This configuration has no external zero adjustment. Use approved calibration procedures rather than attempting unauthorized field adjustments.

09. Application and Compatibility Assessment

The 1000 Torr measurement range and 100°C heated sensor suit vacuum processes that require stable absolute pressure monitoring.

• Semiconductor manufacturing vacuum equipment
• Thin-film deposition systems
• Vacuum chamber pressure monitoring
• Industrial vacuum process instrumentation
• Gas processing and pressure monitoring assemblies
• Vacuum systems with analog voltage acquisition

Before Replacement, Verify:

• Full-scale pressure range and pressure units.
• Absolute pressure measurement requirement.
• 100°C heated sensor configuration.
• NW16-KF mechanical connection.
• 9-pin D-sub electrical interface.
• ±15 VDC power availability.
• 0–10 VDC analog input compatibility.

Replacement Warning: Similar 629H Series models may have different pressure ranges, fittings, and electrical configurations. Do not select replacements by series name alone.

10. Certifications and Product Compliance

• CE Compliance: The specified configuration is CE compliant.
• Electrical Interface: ±15 VDC supply with analog voltage output.
• Process Construction: Inconel wetted materials.
• Vacuum Connection: NW16 ISO-KF.

Request the applicable manufacturer's declaration when your project requires formal compliance documentation.

11. Five Professional Engineering FAQs

Q1: Why would a process engineer choose a 100°C heated transducer over a lower-temperature model?

A: A heated configuration provides controlled sensing conditions for processes that require improved thermal stability. Engineers should evaluate ambient conditions, process requirements, and the instrument's specified temperature coefficients before selecting the heating temperature.

Q2: Does the 1000 Torr full-scale range make this model suitable for every vacuum measurement stage?

A: No. The required range depends on the process operating window and measurement accuracy requirements. Engineers should select a range that covers normal operating pressure without sacrificing useful measurement resolution.

Q3: What should engineers consider when integrating a 0–10 VDC output into an existing control cabinet?

A: Check the analog input voltage range, input impedance, grounding arrangement, and cable routing. Also confirm the manufacturer's connector pinout. A wiring mismatch can produce incorrect readings or prevent signal acquisition.

Q4: Can a standard NW16-KF vacuum connection replace the existing fitting without additional checks?

A: Not automatically. Confirm the flange dimensions, centering ring, sealing arrangement, clamp clearance, and mating surface condition. Mechanical compatibility does not independently guarantee vacuum integrity.

Q5: What is the most important information when selecting between different MKS 629H configurations?

A: Compare the complete ordering number, full-scale range, sensor temperature, process fitting, and electrical connector. Also check power requirements and available analog inputs. These details prevent costly installation and replacement mismatches.

12. Supply, Warranty and Ordering Information

We support industrial vacuum instrumentation requirements with model verification and international shipping arrangements.

Commercial Information	Details
Brand	MKS Instruments
Model	629H13TDDL1B
Series	629H / 600 Series
Product Type	100°C Heated Baratron Pressure Transducer
Full-Scale Range	1000 Torr
Process Connection	NW16 ISO-KF
Warranty	12 months
Shipping Methods	FedEx, UPS, DHL

12-Month Warranty: We provide a 12-month warranty against covered product defects, subject to the agreed sales terms and warranty conditions.

International Shipping: We support FedEx, UPS, and DHL shipping options. Delivery arrangements depend on destination and order confirmation.

Contact our sales team for pricing, stock availability, lead time, and technical assistance. Include the complete model number and your application requirements when requesting a quotation.

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